If you want to do one deal a year this may work if you have a lot of cash. if not then you will need to start finding deals with a little bit more margin and finding inexpensive money to borrow so you can scale your business.

3- timeframe, probably several months of living in a construction zone, not fun.4- there are other options for you to "house hack " and be profitable and retain the value of your house, without people stomping around above your head at all hours of the night.

Just talk with a title company and it is a pretty easy process and fairly inexpensive.

However, I do put a time frame in which the seller has to provide requested documents.

Wholesalers and providers don't want to get locked down on a tight time frame just for someone to reserve their right to back out of a deal.

4 - Any excellent recommends on inexpensive full service co-hosting?

An LLC is pretty inexpensive to set up, and my understanding is that the legal protection is good.

This is a steady increase but still in a solid time frame for me.

It really depends on the time frame of your deal. 

MOST IMPORTANTLY, send an offer to the owner of record that contains your price, closing time frame, and a signature block.